Sacramento daily record-union. [volume] (Sacramento [Calif.]) 1875-1891, 1887-01-15
A SEWER SYSTEM.
Another New Method of Collecting Sew.
age-Suggested Plans for Cities.

G. Z. Grunsky civil engineer, of Sacre-
mento, has invented and received letters
patent for new system OF sewering cities
and towns. Mr.. Grunsky is a well Unknown
citizen, connected with the State Engineer
ing Department, and has given several
years Of study to methods employed and
the defects in present systems. Progress
in sanitary works relating to the collection
and disposal of sewage is marked by a ten
dency 10 classify more thoroughly the ma
.erial 10 be handled, and to provide for
each kind separate system of disposal, as
may be best adapted to local conditions
Concerning this subject Mr.. Grunsky says:
In the last few years the discharge OF
sewage matter into streams flowing through
populated districts is meeting with such de
cided opposition that it will not be long be-
fore provision must be made TO dispose
at least OF the most offensive matter in
some other way. Il is safe 10 predict that
of the various methods employed to de-
stroy its otfeDsiveuess, or to utilize il, none
will find such general favor as its use for
irrigation and fertilization. So long as no
objection is feared from interested parties.
the simplest and most convenient method
Of disposal undoubtedly IS TO deliver ii into
flowing streams.
" Wherever the offensive waste house
drainage, ETC., cannot be disposed of in the
same way as rain water il ought 20 be col
lected apart from the latter. This is essen
tial to reduce the quantity of material to
be separately disposed of or specially
treated, and has led to the Introduction OF
separate systems of sewers for sewage pro-
per and for rain water The tendency of
modern improvements is toward strict
enforcement of the separate system. City
authorities may some day find it necessary
even 70 compel a special treatment of the
sewage matter before il is permitted to en-
ter the sewers.
When a city is located on very level
ground 1t may be found desirable particu-
larly from the standpoint of economy, to
compel the delivery of all house and fac
tory waste, etc, at prescribed elevations.
thus securing g higher point of final dis
charge from the entire system than could
otherwise be attained
Mr.. GTunsky claims that he deems his
system IS preferable to a separate system
and contemplates the most economical COL
lection and delivery of sewage at selected
out1all point, thence to be finally disposed
OF in the manner thought advisable by
local authorities. He thus describes his
plans;
Ny system OF sewerage involves the use
of pipes graded TO the amount of sewage,
and sufficiently small to insure yelocities
which will prevent deposits. They must
be constructed of material having sufficient
strength to stand the pressure to which
they will necessarily be subjected as here.
after explained. Pipes of ironstone with
glazed inner surface will answer in ordi-
nary cases Tor cities comparatively level.
Before the sewage enters the sewer
pipes it IS to be delivered into receivers,
one OF which is provided for each building,
and which is within certain limits) pro-
portioned in size TO the amount OF sewage
which may be expected from that building
This receiver IS preferably of sheet iron and
cylindrical, having a sloping bottom in
the shape Of an inverted cone frustum
Pipes from the various sinks, closets, bath
rooms, etc, lead into this receiver, ana
must all be provided at, or above the point
where they enter it, with saitable valves TO
prevent back-fow into the pipes from the
receiver when the material in it is subject
ed 20 pressure, as | will explain.
The receiver l suggest is self-discharg-
ing. lis contents, as soon as it is full, pass
through g syphen into a sewer pipe. ! ar
range a yent-pipe for the top of the re-
ceiver, open TO the air above the top of the
building. Through this will pass all the
air displaced from the receiver while il is
filing with sewage. Below the level Of the
bottom of the receiver the long arm of the
syphon is connected, by means of a second
with the first. Thus free escape
is afforded to the air displaced from the
sewer pipes while the receiver is discharg-
ing its contents. My system requires that
all receivers shall be grouped, according to
elevation, into districts, and that the eIeva- |
ton OF all receivers in each district shall |
be uniform.
Below each distlic. valve IS arranged
in the sewer mail. / introduce the water,
under pressu~e ~ convenient points into
the sewer a. district and it can, BY the
closing c: De valve in the sewer main be-
low il. be .Orced 10 .l5w through the va-i-
Gus sewers back into the receivers.
Ali receivers in any such district are
thus filed simultaneously, and By the
opening of the valve al all simultaneously
discharged, flushing every pipe in the dis
trict throughout It's whole extent, and Ell
feeling as well a thorough flushing OF the
sewer main.
All receivers J provide shall be placed
al as great an elevation as practicable above
The sewer mains. At each discharge from
one or more receivers the sewage matter will
enter the sewers under L pressure equal TO
the hight of receivers above the sewers, and
thus can always be made sufficiently great
to make the maia practically independent
O. grade.
The entire system S closed one, the
only cOmmuni2, ION with the open air BE-
ing through - Yvnt tubes above re-
ferred to-
he thus desu.ise5 the operation of his
system Each receiver, as soon as full,
IL. 80 m
matter from the bottom of the receiver is
the first to pass through the Syphon, and is
followed by the accumulated water IF the
capacity OF the receiver is adequate, each
discharee VIII flush the pipe iesding to
connection with the sewers. iiie sewers
themselves in every growing Town or city
must necessarily be selected OF - com
mensCra,e With the Ultimate requirements
that is 70 sag, at ne time they are I'D they
will generally have too great = ca acity for
immediate needs. J therefore necessary
to be alb 10 flash ,lem thoroughly. which
in my System can ne accomplished from
day 20 day. 4 desirable. al Girifing ex-
pense of tiuleand water.
4 sewer main will generally pass
through several OF the districts the receiv-
ers in each of which, as ] have explained
are ct uniform elevations. Water IS intro
NAsCCN Il Ol-A any GO1Ftll4GuA GOLTIE AtlGLI
sufficient pressure TO fill the group Of re-
ceiyers in the loves. district The valve in
the main sewer just below this district is
closed. In consequence of this check to It's
flow the water will gradually FIJI sewer
mains and branch sewers. forcing the air
they may contain back to the vent pipes l
have described as being connected with the
sewers near each receiver. It is essential to
make house connection with the highest
point of sewer main, or branch, when the
same passes over rise, in systems not laid
10 grade, so as to prevent the accumulation
Of air at that point. Thus water is com
PEELED to rise to the hight of the receivers
in the district, and is held at the required
pressure until all receivers are full. where
upon the opening of the valve causes the
discharge of all receivers, and aecompishes
the desired flushing of all sewers in the dis
trict. This operation is repeated in turn
for the upper districts.
Ny system has the advantage, l claim,
over all Others, of great economy. 1t is
simple easy to Onerate has no cOrnn1icate5